2116358662501 has 2 divisors, whose sum is σ = 2116358662502. Its totient is φ = 2116358662500.

The previous prime is 2116358662423. The next prime is 2116358662541. The reversal of 2116358662501 is 1052668536112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612897460001 + 503461202500 = 1269999^2 + 709550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116358662501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116358662541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058179331250 + 1058179331251.

It is an arithmetic number, because the mean of its divisors is an integer number (1058179331251).

Almost surely, 2^{2116358662501} is an apocalyptic number.

It is an amenable number.

2116358662501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116358662501 is an equidigital number, since it uses as much as digits as its factorization.

2116358662501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 2116358662501 in words is "two trillion, one hundred sixteen billion, three hundred fifty-eight million, six hundred sixty-two thousand, five hundred one".